Frequently Asked Questions
Your QF pipe is all 5' long, what if I need a 36" L piece?
In this case, you will use the Quick-Fit Sleeve to achieve your desired length.
How do your systems improve air quality?
Our advanced filtration technology removes contaminants, ensuring clean air.
How many Quick-Fit Sleeves do I need to order?
You will need a Quick-Fit Sleeve when a pipe run is less than a 5' increment, and, for the most part, every time you use a branch or 90° elbow.
Do QF Clamps come with the pipe? If not how many do I need to order?
Clamps do not come with pipe. As a rule, you will need one clamp per component ordered. Our quoting tool, Quick Tick Online™ automatically calculates the Clamps needed for each QF component.
What items do you stock?
Nordfab stocks a wide variety of pipe, sleeves, elbow, branches and adapters in sizes 3" to 12". Please call Nordfab to check availability.
How long does it take to get this “stuff”?
Standard shipment is 3-4 days for most parts.
How often do I need a hanger?
A Pipe Hanger is needed every 10' as a general rule to support the duct. Please refer to local codes.
How do I connect to the end of an existing non QF system?
Nordfab offers a full line of adapters to connect to any existing pipe you might have. Please call Nordfab for details or visit our website.
How do I connect to a metric machine?
Nordfab can make adapters and reducers to connect to most metric machines.
How do I connect to a 2" diameter or smaller machine connection?
Nordfab offers reducers to 2" diameters and smaller hose connections.
What do I do when I need to connect to a machine that has many ports of varying sizes and the ports are too close together to use branches?
Nordfab can make custom manifolds to fit your needs. Contact Nordfab with your specifications.
What are the exact OD and ID of your pipe?
Pipe dimensions are listed in the Nordfab Product Reference.
When do I need ePTFE seals with clamps?
ePTFE clamps are used in FDA, chemical, and high temperature applications. For higher temperatures, silicone seals may also be used. Please see our Product Reference for temperature ratings.
When do I need to use stainless steel?
Stainless steel is used in FDA, chemical and high temperature applications.
Do I need to do anything different for a “wet” system?
Yes, contact Nordfab with your “wet” system needs.
What is the difference between rigid and ultra flex hose?
Rigid flex hose is constructed to hold its form and can support a small hood; ultra flex is very limp like a slinky.
What is the difference in “pressform”, “gored”, and “tubed” elbows?
Press formed elbows are constructed in two halves with a welded seam. Gored elbows are constructed in 15° segments. Tubed elbows are constructed from a 14 gauge extruded tubular steel with QF ends spot welded to each end.
Is QF FDA approved?
Nordfab products are not FDA approved; however, our products have been used in many food/ pharmaceutical applications.
Do you offer “clean-outs”?
Nordfab does offer clean-out doors, please contact Nordfab for details. We do not recommend these due to their being a potential point of clog themselves. With the removal of two clamps on any component, a clean-out can be made.
Is QF SMACNA certified?
Nordfab is not SMACNA certified, although Nordfab does meet and exceed standards for Class 2 Ducting.
What is the difference between an “angle flange” and a “flat flange”?
An Angle Flange is industry standard. A flat flange is a 11/2" wide flat piece of 3/16" sheet metal not drilled unless you supply a drawing for bolt hole locations.
Is Nordfab a union shop?
Nordfab is not a unionized company.
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